Tech FAQs - Threshold Norco Bicycles December 26, 2022 23:58 Updated Follow Which bolts are used on Threshold Single Speed eccentric bottom bracket clamps? The classic M6 x 1.0, Socket Head Cap Screw. 20mm long! Related articles Threshold - 2016-2021 - Small Parts What's the max tire size for my bike? Where is my Norco Bicycles Owners Manual? Section - 2019-2021 - Small Parts Threshold - 2021 - Torque Specs